ASP.NET core dockerising a nested project

Question

So, I've recently come across a project I would like to dockerise which is built in do.net (I should caveat with the fact that I am not a .net developer)

The repo can be found here for reference:

https://github.com/observerly/ASCOM.Alpaca.Simulators

I have given it my best attempt to setup the following Dockerfile to be able to containerise this app:

# syntax=docker/dockerfile:1
FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /app 

# copy NuGet config
COPY NuGet.config .

# copy csproj and restore as distinct layers
COPY *.sln .
COPY ASCOM.Alpaca.Simulators/*.csproj ./ASCOM.Alpaca.Simulators/
COPY Camera.Simulator/*.csproj ./Camera.Simulator/
COPY CoverCalibratorSimulator/*.csproj ./CoverCalibratorSimulator/
COPY DomeSimulator/*.csproj ./DomeSimulator/ 
COPY FilterWheelSimulator/*.csproj ./FilterWheelSimulator/ 
COPY FocuserSimulator/*.csproj ./FocuserSimulator/ 
COPY ObservingConditionsSimulator/*.csproj ./ObservingConditionsSimulator/ 
COPY OmniSim.Tools/*.csproj ./OmniSim.Tools/ 
COPY RotatorSimulator/*.csproj ./RotatorSimulator/ 
COPY SafetyMonitorSimulator/*.csproj ./SafetyMonitorSimulator/ 
COPY SwitchSimulator/*.csproj ./SwitchSimulator/ 
COPY TelescopeSimulator/*.csproj ./TelescopeSimulator/ 

# copy WindowsBase.Vector
COPY WindowsBase.Vector/*.sln ./WindowsBase.Vector/ 
COPY WindowsBase.Vector/WindowsBase.Vector/*.csproj ./WindowsBase.Vector/WindowsBase.Vector/ 

RUN dotnet restore 

# copy everything else and build app
COPY ASCOM.Alpaca.Simulators/. ./ASCOM.Alpaca.Simulators/
COPY Camera.Simulator/. ./Camera.Simulator/
COPY CoverCalibratorSimulator/. ./CoverCalibratorSimulator/
COPY DomeSimulator/. ./DomeSimulator/ 
COPY FilterWheelSimulator/. ./FilterWheelSimulator/ 
COPY FocuserSimulator/. ./FocuserSimulator/ 
COPY ObservingConditionsSimulator/. ./ObservingConditionsSimulator/ 
COPY OmniSim.Tools/. ./OmniSim.Tools/ 
COPY RotatorSimulator/. ./RotatorSimulator/ 
COPY SafetyMonitorSimulator/. ./SafetyMonitorSimulator/ 
COPY SwitchSimulator/. ./SwitchSimulator/ 
COPY TelescopeSimulator/. ./TelescopeSimulator/ 

WORKDIR /app/ASCOM.Alpaca.Simulators
RUN dotnet publish -c Release -o out 

# Build runtime image
FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS runtime
WORKDIR /app 

COPY --from=build /app/ASCOM.Alpaca.Simulators/out ./
ENTRYPOINT ["dotnet", "ASCOM.Alpaca.Simulators.dll"]

However, I am encountering the following error stack:

#44 4.204 /app/TelescopeSimulator/AstronomyFunctions.cs(282,23): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.205 /app/TelescopeSimulator/AstronomyFunctions.cs(379,47): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.205 /app/TelescopeSimulator/AstronomyFunctions.cs(379,25): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.205 /app/TelescopeSimulator/AstronomyFunctions.cs(395,47): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.205 /app/TelescopeSimulator/AstronomyFunctions.cs(395,25): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.205 /app/TelescopeSimulator/MountFunctions.cs(25,51): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.206 /app/TelescopeSimulator/MountFunctions.cs(25,25): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.206 /app/TelescopeSimulator/MountFunctions.cs(64,52): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.207 /app/TelescopeSimulator/MountFunctions.cs(64,25): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.207 /app/TelescopeSimulator/MountFunctions.cs(97,51): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.207 /app/TelescopeSimulator/MountFunctions.cs(97,25): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.207 /app/TelescopeSimulator/MountFunctions.cs(123,52): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.207 /app/TelescopeSimulator/MountFunctions.cs(123,25): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.207 /app/TelescopeSimulator/MountFunctions.cs(159,42): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.208 /app/TelescopeSimulator/MountFunctions.cs(159,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.208 /app/TelescopeSimulator/MountFunctions.cs(168,43): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.209 /app/TelescopeSimulator/MountFunctions.cs(168,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.209 /app/TelescopeSimulator/MountFunctions.cs(177,41): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.210 /app/TelescopeSimulator/MountFunctions.cs(177,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.210 /app/TelescopeSimulator/TelescopeHardware.cs(1497,43): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.210 /app/TelescopeSimulator/TelescopeHardware.cs(1517,42): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.211 /app/TelescopeSimulator/TelescopeHardware.cs(1670,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.212 /app/TelescopeSimulator/TelescopeHardware.cs(1786,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.212 /app/TelescopeSimulator/TelescopeHardware.cs(1843,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.212 /app/TelescopeSimulator/TelescopeHardware.cs(1933,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.212 /app/TelescopeSimulator/TelescopeHardware.cs(158,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.213 /app/TelescopeSimulator/TelescopeHardware.cs(163,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.213 /app/TelescopeSimulator/TelescopeHardware.cs(168,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.214 /app/TelescopeSimulator/TelescopeHardware.cs(173,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.214 /app/TelescopeSimulator/TelescopeHardware.cs(193,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.214 /app/TelescopeSimulator/TelescopeHardware.cs(200,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.215 /app/TelescopeSimulator/TelescopeHardware.cs(202,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.215 /app/TelescopeSimulator/TelescopeHardware.cs(219,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.215 /app/TelescopeSimulator/TelescopeHardware.cs(224,24): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.216 /app/TelescopeSimulator/TelescopeHardware.cs(249,25): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.216 /app/TelescopeSimulator/TelescopeHardware.cs(254,25): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.216 /app/TelescopeSimulator/TelescopeHardware.cs(265,23): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.217 /app/TelescopeSimulator/TelescopeHardware.cs(274,23): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]
#44 4.217 /app/TelescopeSimulator/TelescopeHardware.cs(279,23): error CS0246: The type or namespace name 'Vector' could not be found (are you missing a using directive or an assembly reference?) [/app/TelescopeSimulator/TelescopeSimulator.csproj]

Could anyone provide me with any pointers to be able to solve this niggling issue?

My suspicions are that it has something to do with the nested WindowsBase.Vector situation...

Answer 1

Your mistake is that you never copy the code for the WindowsBase.Vector project into the container. Add the last line in this block.

# copy everything else and build app
COPY ASCOM.Alpaca.Simulators/. ./ASCOM.Alpaca.Simulators/
COPY Camera.Simulator/. ./Camera.Simulator/
COPY CoverCalibratorSimulator/. ./CoverCalibratorSimulator/
COPY DomeSimulator/. ./DomeSimulator/ 
COPY FilterWheelSimulator/. ./FilterWheelSimulator/ 
COPY FocuserSimulator/. ./FocuserSimulator/ 
COPY ObservingConditionsSimulator/. ./ObservingConditionsSimulator/ 
COPY OmniSim.Tools/. ./OmniSim.Tools/ 
COPY RotatorSimulator/. ./RotatorSimulator/ 
COPY SafetyMonitorSimulator/. ./SafetyMonitorSimulator/ 
COPY SwitchSimulator/. ./SwitchSimulator/ 
COPY TelescopeSimulator/. ./TelescopeSimulator/ 
COPY WindowsBase.Vector/. ./WindowsBase.Vector/

but instead of copying each project separately, you can just do

# copy everything else and build app
COPY . .

and copy everything at once.